From ba9d670d4bbc86007b3e99720b3ac313a357ecb3 Mon Sep 17 00:00:00 2001
From: Steffen Vogel <post@steffenvogel.de>
Date: Mon, 15 Jun 2020 22:49:19 +0200
Subject: [PATCH] cmake: make unit-tests optional

---
 fpga/CMakeLists.txt       | 6 +++++-
 fpga/tests/CMakeLists.txt | 2 --
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/fpga/CMakeLists.txt b/fpga/CMakeLists.txt
index ab1a1c66f..9fb833e73 100644
--- a/fpga/CMakeLists.txt
+++ b/fpga/CMakeLists.txt
@@ -57,13 +57,17 @@ pkg_check_modules(JANSSON REQUIRED IMPORTED_TARGET jansson)
 pkg_check_modules(XIL REQUIRED IMPORTED_TARGET libxil)
 
 find_package(Threads)
+find_package(Criterion)
 
 include_directories(thirdparty/CLI11)
 include_directories(thirdparty/rang)
 
 add_subdirectory(lib)
 add_subdirectory(src)
-add_subdirectory(tests)
+
+if(CRITERION_FOUND AND TOPLEVEL_PROJECT)
+	add_subdirectory(tests)
+endif()
 
 if(NOT CMAKE_PROJECT_NAME STREQUAL "villas-node")
 	add_subdirectory(common)
diff --git a/fpga/tests/CMakeLists.txt b/fpga/tests/CMakeLists.txt
index 6738b76a0..d43aac4d1 100644
--- a/fpga/tests/CMakeLists.txt
+++ b/fpga/tests/CMakeLists.txt
@@ -42,8 +42,6 @@ if (CMAKE_CUDA_COMPILER)
 		gpu.cpp rtds2gpu.cpp gpu_kernels.cu)
 endif ()
 
-find_package(Criterion REQUIRED)
-
 target_include_directories(unit-tests-fpga PUBLIC
 	../include
 	${CRITERION_INCLUDE_DIRECTORIES}